Handheld electric scissors

Abstract

This utility model relates to the field of power tool technology, specifically a handheld electric scissors. A handheld electric scissors includes: a rotating blade, a motor, a battery powering the motor, a gearbox driven by the motor to rotate the blade, and a housing comprising a main body shell and end caps. The grip portion of the main body shell is integrally formed with the tool drive portion. The grip portion houses the battery and extends along the X-axis, completely covering the battery circumferentially. Projected along the Y and Z axes, neither the motor nor the battery extends beyond the outer circumference of the main body shell. The main body shell has an opening along the X-axis covered by the end caps, and the tool drive portion houses the gearbox and motor. The advantage of this utility model is that the projections of the internal components of the tool drive portion and the grip portion do not exceed the main body shell. The integrally formed main body shell covers the main part of the entire housing, sufficiently accommodating all internal components, significantly enhancing the overall structural strength and improving product reliability.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, specifically a handheld electric scissors. Background Technology

[0002] The housing of a handheld electric shears, as a critical load-bearing structure, must withstand the gripping force, vibration, and external impact during operation. In existing technologies, the housing is mostly constructed by splicing together two halves of the shell, a structure with obvious strength deficiencies.

[0003] Because the casing is composed of two halves, the components inside the casing are not all housed in one half, but are distributed in the left and right halves. The seam between the two halves encircles the middle of the entire fuselage, forming a closed seam. This seam forces the force to be transmitted through the connection between the two halves, weakening the structure's load-bearing capacity.

[0004] To ensure reliable connection, this structure usually relies on screw fastening, which increases the number of parts and assembly steps. If a snap-fit ​​connection is used, the two parts are prone to separation under stress, resulting in loose connection. This not only affects the overall strength of the casing, but may also cause internal components to lose stable protection and shorten the service life of the equipment. Utility Model Content

[0005] The purpose of this invention is to provide a handheld electric scissors to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A handheld electric scissors, characterized in that it comprises:

[0008] Rotating blade;

[0009] Electric motor;

[0010] The battery powers the motor;

[0011] The gearbox, driven by a motor, rotates the blades; and

[0012] The housing includes the main housing and end caps;

[0013] The main unit casing includes:

[0014] The grip section is for the user to hold and houses the battery; and

[0015] Tool drive unit, housing the gearbox and motor;

[0016] The grip and the tool drive are integrally molded;

[0017] The handheld electric scissors are defined with mutually perpendicular X, Y, and Z axes; the grip extends along the X-axis; the projection of the motor and battery along the Y and Z axes does not exceed the outer periphery projection line of the main body shell.

[0018] The battery is completely covered by the gripping part in the circumferential direction around the X-axis;

[0019] The main housing is open along the X-axis, forming an opening; the end cap covers the opening.

[0020] As a further option: the main housing forms a receiving cavity; the motor, battery and gearbox are located inside the receiving cavity.

[0021] As a further option: the rotation axis of the rotating blade is parallel to the Y-axis.

[0022] As a further option: the opening is located in the tool drive section; the end cap is fixed to the tool drive section; the end cap and the tool drive section enclose the gearbox and motor.

[0023] As a further embodiment: the housing also includes a tail cover; the end of the grip portion away from the tool drive portion along the X-axis is open to form an opening; the tail cover is located at the end of the grip portion away from the tool drive portion along the X-axis and covers the opening.

[0024] As a further solution: the handheld electric shears also include an inner frame; the inner frame is fixed to the tool drive unit; the inner frame cooperates with the tool drive unit to clamp and fix the motor and gearbox from both sides; the end cap is installed to the tool drive unit through a snap-fit ​​structure.

[0025] As a further embodiment, the handheld electric scissors also include a trigger; the trigger is pressed by the user to start the motor; the grip has a trigger hole; the trigger passes through the trigger hole.

[0026] As a further embodiment: the tool drive unit has a bottom surface; the bottom surface extends from one side of the housing to the other side of the housing along the rotation axis of the rotating blade; the bottom surface is substantially parallel to the X-axis; the bottom surface is substantially parallel to the rotation axis of the rotating blade.

[0027] As a further embodiment, the housing also includes a side cover; the side cover is located on the opposite side of the rotating blade; the side cover is fixed to the tool drive unit; the inner wall surface of the tool drive unit away from the side cover is formed with a limiting rib for positioning the gearbox.

[0028] As a further option, the handheld electric scissors also include a display screen for showing status information; the display screen can be observed from one side of the end cap.

[0029] As a further option: the end cap is transparent or semi-transparent; the end cap covers the display screen; the display screen can be observed through the end cap.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] 1. The main casing, which is the core of the housing, adopts a one-piece molding design, which strengthens the overall structural strength of the housing. Compared with the traditional left and right half-part combination structure, the housing no longer relies on the two halves to share the force. Instead, the main casing concentrates the force to bear the force, which can more reliably bear the gripping force, vibration and impact during operation, and provide stable protection for the internal components.

[0032] 2. In response to the problem that the components are scattered on the left and right halves of the shell in traditional structures, which increases the stress at the joints, the one-piece molded main shell can accommodate the internal components in a unified space. The projections of the motor, battery and gearbox in the Y and Z axes do not exceed the range of the main shell. With the contour constraint of the main shell, the internal space layout of the shell is more compact and efficient. It can accurately accommodate core components such as batteries, motors and gearboxes within a limited size, and avoid the component loads from being directly applied to the splicing parts.

[0033] 3. The end cap covers the opening of the main housing, and the tail cap covers the opening of the grip. As the core load-bearing structure, the main housing provides a stable space for components such as motors and batteries. Components can be placed inside the main housing first, and then the opening and the tail cap can be used to close the opening, which makes assembly easier.

[0034] 4. The inner frame and tool drive unit work together to clamp and fix the motor and gearbox, further enhancing the stability of the core components.

[0035] 5. Transparent or semi-transparent end caps cover the display screen, allowing users to clearly observe status information from the outside, intuitively presenting equipment operating parameters and enhancing the intelligent interactive experience. Simultaneously, the end caps are easily and conveniently fixed to the opening of the main unit casing using clips or other methods, effectively protecting internal components, blocking dust, moisture, and external impacts, and extending the equipment's lifespan.

[0036] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0037] Figure 1 A 3D diagram of a handheld electric scissors;

[0038] Figure 2 for Figure 1 A 3D view of the rear view of a handheld electric scissors;

[0039] Figure 3 for Figure 1 A three-dimensional view of a handheld electric shears from below;

[0040] Figure 4 for Figure 3 A cross-sectional view along the BB direction;

[0041] Figure 5 for Figure 1 A schematic diagram showing the partial structural separation of a handheld electric scissors;

[0042] Figure 6 for Figure 5 A schematic diagram of the main unit casing;

[0043] Figure 7 for Figure 1 A diagram illustrating the removal of the end cap, protective cover, lower blade, and base of handheld electric shears;

[0044] Figure 8 for Figure 7 A magnified view of point C in the image;

[0045] Figure 9 for Figure 7 Schematic diagram of the grinding components in the diagram;

[0046] Figure 10 for Figure 1 A cross-sectional view along the AA direction.

[0047] List of reference numerals: Handheld electric shears 100; Rotating blade 11; Motor 12; Battery 13; Gearbox 14; Output shaft 141; Trigger 15; Spring 151; Return spring 152; Circuit board 16; Battery bracket 17; Protective cover 18; Inner frame 19; Housing 20; Main housing 201; Tool drive unit 2011; Grip unit 2012; Positioning rib 2013; Display screen 2014; Bottom surface 2015; Limiting rib 2016; Soft rubber layer 2017; End cap 202; Tail cap 203; side cover 204; charging port 2031; rotating groove 2041; grinding assembly 21; whetstone 211; follower 212; support shaft 2121; followed push block 2122; pushed part 2123; slider 2124; hook-shaped protrusion 2125; driving member 213; toggle 2131; rotating block 2132; pushing part 2133; protrusion 2134; biasing member 214; return spring 22; guide sleeve 23; slide groove 231; base 25; lower blade 251. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] like Figure 1 , Figure 4 and Figure 7 As shown, a handheld electric scissors 100 includes: a rotating blade 11, a motor 12, a battery 13, a gearbox 14, a housing 20, and a grinding assembly 21.

[0050] like Figure 1 As shown, the rotating blade has various designs for cutting objects. In one specific embodiment, the rotating blade 11 is a polygonal blade, such as a decagonal blade, with a cutting edge on each side, suitable for precisely cutting materials. Alternatively, the rotating blade can also be a circular blade with sharp cutting edges, providing a smooth and uniform cutting effect.

[0051] like Figures 4-5 As shown, the housing 20 includes a main housing 201 and an end cap 202. In one specific embodiment, the main housing 201 forms a receiving cavity. The motor 12, battery 13, and gearbox 14 are all located within the receiving cavity. The main housing 201 includes a tool drive unit 2011 and a grip unit 2012 for the user to hold. The main housing 201 adopts a one-piece molding design, manufactured through injection molding or die casting processes to form a continuous integral structure. This one-piece molding design creates a seamless, continuous integral structure, with no physical splicing points between the tool drive unit 2011 and the grip unit 2012. This not only eliminates the need for connecting structures such as screws and clips required for component splicing, reducing the risk of separation at seams, but also ensures uninterrupted and lossless force transmission. Force can be directly transmitted along a continuous material medium, avoiding force dispersion, offset, or frictional loss at seams. This results in greater overall rigidity, less local deformation under stress, and higher structural stability.

[0052] Specifically, the handheld electric scissors 100 has mutually perpendicular X, Y, and Z axes. The grip 2012 extends along the X-axis. The projections of the motor 12, battery 13, and gearbox 14 along the Y and Z axes do not exceed the outer periphery projection line of the main housing 201. The outer periphery projection line refers to the outermost boundary line of the main housing 201 in a specific direction. This means that the outermost boundaries of the motor 12, battery 13, and gearbox 14 along the Y and Z axes are completely contained within the outermost boundary line of the main housing 201. This layout ensures the compact design of the handheld electric scissors and provides a basis for the unibody design of the main housing 201: there is no need to design complex splicing or hollow structures to avoid protruding parts, thus reducing structural weak points. The complete contour enclosure allows the main housing 201 to form a continuous rigid support frame, evenly distributing the vibration and stress of internal components throughout the entire housing, significantly improving overall strength and impact resistance.

[0053] Specifically, the grip portion 2012 houses a battery 13. The battery 13 powers the motor 12. The battery 13 is completely enclosed by the grip portion 2012 in the circumferential direction around the X-axis. In a specific embodiment, a battery bracket 17 may also be optionally provided within the grip portion 2012 to directly support and fix the battery 13. The battery bracket 17 consists of two halves, each fixing the battery 13 from both sides. Both halves are injection-molded parts, symmetrical about the X-axis as their central axis, ensuring the reliability of the battery 13 during use and reducing potential damage to the battery 13 from external impacts. The battery bracket 17 is fixed to the inner wall of the grip portion 2012 with screws. Alternatively, the battery bracket may be omitted, and the battery may be directly wrapped and fixed within the inner wall of the grip portion. On the one hand, the circumferential covering structure of the grip part along the X-axis forms a natural limit on the battery in the radial direction through the precise matching of the inner wall contour with the shape of the battery, preventing the battery from shaking significantly within the grip part; on the other hand, the inner wall of the grip part can further constrain the axial displacement of the battery through pre-set ribs, slots and other simple limiting structures.

[0054] Furthermore, the grip 2012 is provided with a trigger hole. The trigger 15 passes through the trigger hole and is pressed by the user to start the motor 12, allowing the user to easily control the operation of the electric scissors.

[0055] Furthermore, such as Figure 10 As shown, a circuit board 16 is provided between the battery 13 and the trigger 15. The circuit board 16 is arranged parallel to the battery 13, and the battery 13 provides power to the circuit board 16. In one specific embodiment, the circuit board 16 is fixed to the battery bracket 17. The bottom of the battery bracket 17 is recessed to form a groove-shaped receiving space that matches the shape of the circuit board 16. Its outline is adapted to the edge of the circuit board 16. The circuit board 16 is completely embedded in the groove, which not only provides additional restraint for the circuit board 16, but also allows the conductive contacts of the bottom surface 2015 of the circuit board 16 facing the trigger 15 to be fully exposed through the groove space, ensuring the compactness of the overall structure.

[0056] As a specific implementation method, such as Figure 4As shown, a conductive spring 151 is fixed to the side of the trigger 15 near the circuit board 16 by screws. The end of the spring 151 is bent to form a contact point, which can contact the circuit board 16 when the trigger 15 is pressed. A return spring 152 is also provided on the side of the trigger 15 near the circuit board 16. One end of the return spring 152 abuts against the trigger 15, and the other end abuts against a non-conductive area on the circuit board 16. In the natural state, the return spring 152 is in the extended state, and the elastic force pushes the trigger 15 away from the circuit board 16. At this time, because the initial position of the trigger 15 is far away from the circuit board 16, the contact of the spring 151 is completely separated, and the circuit is in the open state. When the user holds the grip part 2012 and presses the trigger 15, the trigger 15 slides along the trigger 15 hole, compresses the return spring 152 and drives the spring 151 to move synchronously. The spring 151 contacts the circuit board 16 to form a closed circuit, drives the motor 12 to run, and drives the rotating blade 11 to work. When trigger 15 is released, the return spring 152 releases its elastic potential energy, pushing trigger 15 back to its initial position. The spring piece 151 disengages from the contact of circuit board 16 along with trigger 15, the circuit is broken, and motor 12 immediately stops working. As an optional implementation, the trigger can also be a micro switch or a mechanical contact switch.

[0057] Furthermore, such as Figure 5 As shown, the gripping part 2012 is open at one end along the X-axis away from the tool drive part 2011, forming an opening that communicates with the internal cavity. The tail cover 203 is snapped into this opening. A charging interface 2031 is provided on the outer surface of one side of the tail cover 203 along the X-axis, and its inner side is electrically connected to the circuit board 16 via wires. When it is necessary to charge the battery 13, the plug of an external charger can be directly inserted into the charging interface 2031 to charge the battery 13. As an optional implementation, a non-rechargeable disposable battery solution can be used, and the battery can be easily replaced by snapping the tail cover, eliminating the need for a charging circuit. Alternatively, the battery design can be eliminated, and a power interface can be integrated into the tail cover for direct power supply via an external adapter. A design with a non-removable battery and a wireless charging coil can also be used, with the tail cover completely enclosed and without physical interfaces, achieving wireless charging through a dedicated base.

[0058] Furthermore, such as Figure 6 As shown, a soft rubber layer 2017 is provided on the upper side of the grip 2012, which is the area where the user's palm contacts when holding it. The soft rubber layer 2017 has a semi-enclosed design and extends along the arc-shaped contour of the upper side of the grip 2012. Its length covers from the front end near the tool drive unit 2011 to the rear end near the tail cover 203. The soft rubber material can absorb the vibration generated when the motor 12 is running, reduce the vibration transmitted to the hand, and reduce fatigue during long-term operation.

[0059] As a specific implementation method, such as Figures 4-5As shown, the tool drive unit 2011 is used to house the motor 12 and the gearbox 14. The motor 12 is the power source of the electric shears, and the gearbox 14 is driven by the motor 12 to drive the rotating blade 11 to rotate to adapt to different cutting needs.

[0060] Specifically, the rotation axis of the rotating blade 11 is parallel to the Y-axis, and the gearbox 14 is provided with an output shaft 141. The output shaft 141 extends out of the tool drive unit 2011 and is fixed to the rotating blade 11 to realize power transmission.

[0061] Furthermore, such as Figures 4-6 As shown, the handheld electric scissors 100 also includes an inner frame 19, which is fixed to the tool drive unit 2011 by screws. Alternatively, the fixing method can be a snap-fit, ensuring stable installation of the inner frame within the tool drive unit 2011. The inner frame 19 has an arc-shaped clamping surface on the side facing the inner wall of the tool drive unit 2011, which matches the contours of the motor 12 and gearbox 14. This surface cooperates with the inner wall of the tool drive unit 2011 to clamp and fix the motor 12 and gearbox 14 from both sides, forming a stable clamping structure and reducing displacement or loosening caused by vibration or external force. As a specific implementation, the inner wall of the tool drive unit 2011 is provided with a plurality of positioning ribs 2013 extending along the Y-axis direction. The plurality of positioning ribs 2013 are parallel strip-shaped protrusions, distributed at intervals along the X-axis direction. Their inner sides also form arc-shaped support surfaces that fit against the outer walls of the motor 12 and the gearbox 14. During assembly, the motor 12 and the gearbox 14 are arranged sequentially along the length of the machine body. The arc-shaped clamping surface of the inner frame 19 gradually approaches the positioning ribs 2013, forming a radial clamping of the motor 12 and the gearbox 14.

[0062] Furthermore, the tool drive unit 2011 has an opening that opens along the X-axis. The end cover 202 covers the opening and is snapped into the tool drive unit 2011. The end cover 202 and the tool drive unit 2011 enclose the gearbox 14 and the motor 12.

[0063] Furthermore, the tool drive unit 2011 is also equipped with a display screen 2014 for displaying the status information of the electric scissors. The display screen 2014 is electrically connected to the circuit board 16. The status information that can be displayed includes one or more of the following: the remaining power of the battery 13 (presented as a percentage or power bars), the current working mode (such as high-speed or low-speed cutting mode), and fault codes (such as displaying the corresponding code when the motor 12 is overloaded or the battery 13 is low on voltage).

[0064] Specifically, the display screen 2014 can be observed from one side of the end cover 202. The end cover 202 covers the display screen 2014. As a specific implementation, the end cover 202 can be made of a semi-transparent or transparent material, which neither obstructs the text, icons, or data display on the display screen 2014, nor does it completely cover the display screen 2014, isolating it from the external environment and effectively preventing direct damage to the screen from dust, moisture, or minor impacts. Specifically, the end cover 202 retains its original transparency in the local area that corresponds to the display screen 2014, ensuring that the user can clearly observe the screen content; while the area of ​​the end cover 202 that does not correspond to the display screen 2014 is made opaque through surface treatment. This ensures both the visibility and protection of the display screen 2014, while also hiding internal non-display components through processing, making the appearance of the end cover 202 more concise and uniform, and avoiding the exposure of the internal structure by transparent materials, which would affect aesthetics. As an optional implementation, the end cap is made of opaque plastic. It has an observation hole matching the size of the display screen at the corresponding position. A transparent protective sheet, slightly larger than the observation hole, is embedded within the observation hole. The edge of the protective sheet is fixedly connected to the edge of the observation hole on the end cap, ensuring complete coverage of the observation hole. This ensures that the displayed content can be clearly observed through the protective sheet while preventing dust and moisture from entering the end cap and contacting the display screen. Furthermore, the outer surface of the transparent protective sheet is flush with the outer surface of the end cap, maintaining a flat appearance and avoiding any protrusions or depressions that would affect the feel or aesthetics.

[0065] Furthermore, the bottom surface 2015 of the tool drive unit 2011 is a plane. The bottom surface 2015 is basically parallel to the X-axis and the rotation axis of the rotating blade 11. The bottom surface 2015 extends from one side of the housing 20 to the other side of the housing 20 along the rotation axis of the rotating blade 11. The width of the bottom surface 2015 along the Y-axis is consistent with the width of the tool drive unit 2011, so that the structure is subjected to more uniform force.

[0066] Furthermore, such as Figure 1As shown, an arc-shaped protective cover 18 is provided on the outer side of the rotating blade 11. One end of the protective cover 18 is connected to the side of the tool drive unit 2011, and the other end extends above the edge of the rotating blade 11. This not only does not affect the rotation of the blade, but also prevents cutting debris from flying and prevents accidental hand contact. A base 25 is fixed to the bottom of the tool drive unit 2011. The lower blade 251 is fixed to the base 25 by screws, and its cutting edge is interlocked with the cutting edge of the rotating blade 11. When the rotating blade 11 rotates at high speed, it cooperates with the stationary lower blade 251 to form a shearing action, achieving precise cutting of materials. The base 25 also provides stable support for the lower blade 251, preventing displacement due to force during cutting and ensuring cutting accuracy. When the handheld electric scissors 100 is placed on a flat surface, such as a workbench, the base 25 can be completely in contact with the surface, forming a stable operating reference. Especially when cutting thicker or harder materials (such as leather or thin metal sheets), it can significantly improve operational stability and reduce cutting deviations caused by tool shaking.

[0067] Furthermore, such as Figures 5-6 As shown, a side cover 204 is provided on the side of the main housing 201 opposite to the rotating blade 11. The side cover 204 is a plate-shaped structure adapted to the side wall of the tool drive unit 2011 and is fixed to the tool drive unit 2011 by a snap or bolt. A limiting rib 2016 for positioning the gearbox 14 is formed on the inner wall surface of the tool drive unit 2011 away from the side cover 204. The limiting rib 2016 is a closed ring, and its inner diameter is adapted to the outer diameter of the housing at one end of the output shaft 141 of the gearbox 14. At the same time, the side cover 204 and the limiting rib 2016 cooperate to clamp the gearbox 14 from both sides and limit the gearbox 14 from swaying during operation.

[0068] like Figures 7-9 As shown, the grinding assembly 21 includes a whetstone 211, a driven member 212, a driving member 213, and a biasing member 214, for grinding the rotating blade 11.

[0069] The whetstone 211 has a first position and a second position. In the first position, the whetstone 211 contacts the rotating blade 11 and can sharpen the rotating blade 11. In the second position, the whetstone 211 separates from the rotating blade 11 and stops the sharpening work.

[0070] The active component 213 can be rotated by the user. In one specific implementation, the active component 213 includes a toggle knob 2131 and a rotating block 2132, which are integrally formed. Alternatively, the toggle knob and the rotating block can be fixedly connected, such as by welding, threaded connection, or snap-fit ​​connection. The toggle knob 2131 extends outside the side cover 204, forming a part for direct user contact and operation. When the user rotates the toggle knob 2131, the rotating block 2132 will rotate synchronously around its central axis under the action of external force.

[0071] Furthermore, the drive unit 213 and the rotating blade 11 are respectively located on both sides of the housing 20. The rotating blade 11, as a high-speed cutting execution component, is arranged on the side of the housing 20 closer to the material to be cut, while the drive unit 213 is located at the other end of the housing 20 away from the blade. The two are indirectly linked through the internal structure of the housing 20, increasing the safe distance between the user's hand and the rotating blade 11, and reducing the risk of the hand accidentally touching the blade during operation.

[0072] The driven member 212 is fixedly connected to the whetstone 211. In a specific embodiment, the driven member 212 includes a support shaft 2121 and a driven push block 2122. The whetstone 211 is fixedly connected to the driven push block 2122 via the support shaft 2121. The support shaft 2121 has a cylindrical structure; one end is fixedly connected to the driven push block 2122 via a threaded connection, interference fit, or pin fixation, or is integrally formed by injection molding or die casting. The other end is firmly connected to the whetstone 211 via bolts or direct bonding. Alternatively, the support shaft can be a hollow tubular structure, a polygonal shaft, a stepped shaft, or a telescopic shaft composed of an inner shaft and an outer tube. In a preferred embodiment, a bushing is fixed to the inner wall of the housing 20 on one side of the whetstone 211. The support shaft 2121 passes through the bushing and can slide axially along it (i.e., move axially along the central axis of the rotating block 2132).

[0073] The biasing element 214 applies a force to the whetstone 211, causing it to move from a first position to a second position. In a specific embodiment, the biasing element 214 is an elastic element, which can be a return spring. The elastic element is assembled between the housing 20 and the driven push block 2122 such that it is subjected to force along the central axis of the driving element 213. One end of the elastic element abuts against the housing 20, and the other end directly abuts against the driven push block 2122. Alternatively, the biasing element can be an elastic plastic element, an elastic rubber element, or a magnetic element. In a specific embodiment, the biasing element 214, for example, a return spring, is sleeved on the support shaft 2121 to ensure that the return spring always deforms along the central axis during compression or extension, avoiding force transmission deviation due to lateral bending or torsion, and ensuring that the force direction applied to the driven push block 2122 accurately points to the second position. Alternatively, the biasing element may not be sleeved on the support shaft; it can be set parallel to the support shaft, or, when the support shaft is a hollow telescopic rod, it can be set within the cavity of the support shaft.

[0074] Specifically, the rotating block 2132 is provided with a pushing part 2133, and the driven pushing block 2122 is provided with a pushed part 2123. The pushing part 2133 is used to abut against the pushed part 2123, wherein the pushing part 2133 and / or the pushed part 2123 form a slope. As a specific embodiment, the slope of the pushing part 2133 extends inclined towards the driven pushing block 2122, while the slope of the pushed part 2123 is inclined towards the rotating block 2132. This opposing slope design allows the two to form complementary contact. The slopes of the pushing part 2133 and the pushed part 2123 can adopt wavy slopes, such as continuous shallow arc protrusions and depressions. As an optional embodiment, the slopes of the pushing part and the pushed part can also be designed as triangular protrusions and corresponding grooves, or oblique tooth-shaped protrusions and corresponding tooth grooves. As an optional implementation, the slopes of the pushing part and the pushed part can also be stepped slopes, arc-shaped slopes, etc., as long as the slopes of the two parts face each other and can form surface contact. The shape itself is not strictly limited. When in the second position, under the continuous force of the biasing member 214, the driven push block 2122 moves the pushed part 2123 closer to the rotating block 2132, so that the slope of the pushing part 2133 and the slope of the pushed part 2123 are completely fitted together, achieving a tight interlocking. At this time, the protruding part of the pushing part 2133 is precisely embedded in the concave area of ​​the pushed part 2123, and there is no gap between the slopes of the two parts, forming a stable locking state. When the rotating block 2132 rotates around its central axis under external force, the rotating component drives the pushing part 2133 to rotate synchronously. The slope of the pushing part 2133 then exerts pressure on the slope of the pushed part 2123 along the circumferential direction, overcoming the reverse force of the biasing component 214. This pushes the pushed part 2123, causing the driven pushing block 2122 to move away from the rotating block 2132 along the central axis, thereby switching the whetstone 211 from the second position to the first position. When the external force is removed, the elastic restoring force of the biasing component 214 pushes the driven pushing block 2122 to move in the opposite direction. The slope of the pushed part 2123 slides back along the slope of the pushing part 2133 until the two return to their interlocking state, completing the entire reset process.

[0075] Furthermore, the side cover 204 axially limits the driving member 213 along the central axis, preventing axial displacement caused by the force of the biasing member 214. In one specific embodiment, a circular through hole (slightly larger in diameter than the toggle knob 2131) is provided in the center of the side cover 204. One end of the toggle knob 2131 is fixedly connected to the end of the driving member 213, and the other end extends outward through the circular through hole of the side cover 204, forming an exposed structure operable by the user. The rotating block 2132 and the side cover 204 are axially limited along the central axis by protrusions 2134. Two symmetrically distributed protrusions 2134 are provided on the outer periphery of the rotating block 2132, each with a right-angled trapezoidal protrusion. The limiting surface of each protrusion is tightly fitted against the inner wall of the side cover 204. When the biasing member 214 applies an axial thrust to the outside of the side cover 204 on the active member 213, the limiting surface of the protrusion 2134 of the active member 213 abuts against the inner wall of the side cover 204, and directly bears the axial force through the structural strength of the side cover 204, preventing the active member 213 from displacing outward along the central axis.

[0076] Furthermore, an annular rotating groove 2041 is provided on the inner side of the side cover 204 corresponding to the position of the protrusion 2134. After assembly, the right-angled trapezoidal protrusion 2134 of the rotating block 2132 is embedded in the rotating groove 2041, and the limiting surface of the protrusion 2134 is in close contact with the bottom of the groove. The inner sidewall of the rotating groove 2041 is provided with two symmetrical arc-shaped baffles. When the user rotates the toggle knob 2131, the protrusion 2134 of the rotating block 2132 rotates with it in the rotating groove 2041. When the side of the protrusion 2134 contacts the arc-shaped baffle of the rotating groove 2041, the baffle prevents the protrusion 2134 from continuing to rotate by contact, thereby strictly limiting the rotation angle of the toggle knob 2131 within a preset range and avoiding damage to the internal structure due to excessive rotation.

[0077] Furthermore, a return spring 22 is provided between the rotating block 2132 and the side cover 204. One end of the return spring 22 is fixed by a pre-set slot, protrusion, or hook structure on the side cover 204, and the other end is fixed to one of the protrusions 2134 on the rotating block 2132. When the user rotates the toggle knob 2131, the rotating block 2132 rotates synchronously around the central axis with the toggle knob 2131. At this time, the return spring 22 will undergo torsional deformation and store elastic potential energy because its two ends are fixed by the side cover 204 and the rotating block 2132 respectively. In this state, the return spring 22 applies a reverse torque to the rotating block 2132 in the opposite direction of rotation, and this torque will increase as the rotation angle increases. When the user removes the external force applied to the toggle 2131, the elastic potential energy stored in the return spring 22 is released, its torsional deformation gradually recovers, and the resulting reverse torque acts directly on the rotating block 2132, driving the rotating block 2132 to rotate in the opposite direction of the initial rotation direction until the return spring 22 is fully reset. At this time, the rotating block 2132 drives the toggle 2131 back to the initial position, completing the entire reset process.

[0078] Furthermore, the handheld electric scissors 100 also includes a guide structure for guiding the driven member 212 to slide along the central axis of the driving member 213. The sliding of the driven member 212 along the guide structure ensures its stability during axial movement. In a specific embodiment, the guide structure includes a guide sleeve 23, which is fixedly connected to the side cover 204. Its inner wall is provided with a groove 231 along the moving direction of the driven member 212. Correspondingly, the outer peripheral surface of the driven push block 2122 is provided with a slider 2124 adapted to the groove 231. The slider 2124 is provided with a hook-shaped protrusion 2125 protruding outward. The groove 231 of the guide sleeve 23 is provided with a groove that matches the shape and size of the hook-shaped protrusion 2125. The groove is arranged along the axial direction of the groove 231. The hook-shaped protrusion 2125 is inserted into the groove so that the slider 2124 is slidably connected to the groove 231. When the driven push block 2122 moves along the central axis, the hook-shaped protrusion 2125, along with the slider 2124, engages in the groove of the slide groove 231, which not only restricts the axial displacement of the slider 2124 but also prevents the slider 2124 from accidentally disengaging. As an optional implementation, the guide structure can also be at least one slide rod extending along the central axis of the driving member. The slide rod can be cylindrical or polygonal, and its two ends are fixed to the main housing and the side cover, respectively. Correspondingly, the driven push block has a guide hole adapted to the slide rod, and the slide rod passes through the guide hole.

[0079] Furthermore, there are several sliders 2124, usually two, and these sliders 2124 are evenly distributed circumferentially around the central axis along the outer peripheral surface of the driven push block 2122, so that the driven push block 2122 can be constrained by the slide groove 231 from multiple directions during the sliding process, thus avoiding the rotation of the driven member 212.

[0080] Furthermore, the support shaft 2121 passes through the guide sleeve 23 and is slidably connected to the guide sleeve 23. When the whetstone 211 contacts the rotating blade 11 for grinding in the first position, the guide sleeve 23, through its cooperation with the support shaft 2121, restricts the radial wobble of the support shaft 2121, provides additional radial support for the whetstone 211, and counteracts the lateral force generated during the grinding process. This prevents the whetstone 211 from being affected by force deviation and thus ensures the stability of the entire grinding process.

[0081] Furthermore, the biasing component 214 is disposed inside the guide sleeve 23, with one end abutting against the end face of the guide sleeve 23 and the other end abutting against the driven push block 2122, to prevent it from bending or twisting during the extension and retraction process, and to ensure that the elastic force of the biasing component 214 is always transmitted along the central axis direction.

[0082] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A handheld electric scissors, characterized in that, include: Rotating blade; Electric motor; The battery powers the motor; The gearbox is driven by the motor, which in turn drives the rotating blade to rotate. as well as The housing includes the main housing and end caps; The main unit housing includes: A grip portion for the user to hold and housing the battery; and A tool drive unit that houses the gearbox and the motor; The gripping part and the tool driving part are integrally formed; The handheld electric scissors are defined with mutually perpendicular X-axis, Y-axis and Z-axis; the grip extends along the X-axis direction; the projection of the motor and the battery along the Y-axis and Z-axis directions does not exceed the outer peripheral projection line of the main body shell; The battery is completely covered by the gripping part in the circumferential direction around the X-axis; The main housing is open in the direction along the X-axis to form an opening; the end cap covers the opening.

2. The handheld electric scissors according to claim 1, characterized in that, The main housing forms a receiving cavity; the motor, the battery, and the gearbox are located within the receiving cavity.

3. The handheld electric scissors according to claim 1, characterized in that, The rotation axis of the rotating blade is parallel to the Y-axis.

4. The handheld electric scissors according to claim 1, characterized in that, The opening is located in the tool drive unit; The end cap is fixed to the tool drive unit; the end cap and the tool drive unit enclose the gearbox and the motor.

5. The handheld electric scissors according to claim 4, characterized in that, The housing also includes a tail cover; The grip portion opens at one end away from the tool drive portion along the X-axis direction, forming an opening. The tail cap is located at one end of the grip portion away from the tool drive portion along the X-axis direction, and covers the opening.

6. The handheld electric scissors according to claim 1, characterized in that, The handheld electric scissors also include an inner frame; the inner frame is fixed to the tool drive unit; the inner frame cooperates with the tool drive unit to clamp and fix the motor and the gearbox from both sides; the end cap is installed to the tool drive unit through a snap-fit ​​structure.

7. The handheld electric scissors according to claim 1, characterized in that, The handheld electric scissors also include a trigger; the trigger is pressed by the user to activate the motor. The grip portion is provided with a trigger hole; the trigger passes through the trigger hole.

8. The handheld electric scissors according to claim 1, characterized in that, The tool drive unit has a bottom surface; the bottom surface extends from one side of the housing to the other side of the housing along the rotation axis of the rotating blade; The bottom surface is substantially parallel to the X-axis; the bottom surface is substantially parallel to the rotation axis of the rotating blade.

9. The handheld electric scissors according to claim 1, characterized in that, The housing also includes a side cover; the side cover is located on the opposite side of the rotating blade; The side cover is fixed to the tool drive unit; the inner wall surface of the tool drive unit away from the side cover is formed with a limiting rib for positioning the gearbox.

10. The handheld electric scissors according to claim 1, characterized in that, The handheld electric scissors also include: a display screen for displaying status information; The display screen can be observed from one side of the end cap.

11. The handheld electric scissors according to claim 10, characterized in that, The end cap is transparent or semi-transparent; The end cap covers the display screen; the display screen can be observed through the end cap.

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